Seismic interpretation of the top and base dinantian. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Selection of the attribute to decompose should be meaningful, i. P2 and emudianughe j3 1department of geology, university of port harcourt, port harcourt, nigeria 2department of earth sciences, federal university of petroleum resource, effurun. A package of software tools that help increase the value of seismic data. Seismic attributes are often sensitive to noise present in seismic data.
Printing seismic files from petrel working with seismic in petrel you will need to know how to maneuvre in petrel to get the best settings for a reasonable quality on seismic interpretation in your exported cgm files and when printed. In reflection seismology, a seismic attribute is a quantity extracted or derived from seismic data that can be analysed in order to enhance information that might be more subtle in a traditional seismic image, leading to a better geological or geophysical interpretation of the data. Seismic interpretation and depth conversion of the. Petrelsoftware of schlumberger company is a worldwide software deals with seismic data. Figure 2 shows the raw data before and after the application of structural. Being capable to easily visualize both 2d and 3d seismic data, process it, and interpreter it by picking horizons, drawing faults and even using seismic attributes makes it a great tool.
Esris arcmap openspirit adapter for petrel users guide. Directional guided seismic attributes and their use in assisting structural, stratigraphic and lithological interpretation. Avo intercept, avo gradient, intercept multiplied by gradient, far minus near, fluid factor, etc. The efficiency of seismic attributes to differentiate between massive. Fault modeling in petrel this is done by first defining the faults in the process called fault modeling.
The muting of events in the center is clearly visible and allows for. Their great number and variety is almost overwhelming. Examples of seismic attributes can include measured time, amplitude. Send and receive gis and grid spatial features between petrel andother openspirit enabled applications e. The efficiency of seismic attributes to differentiate. Build a seismic classification cube for the three classes of gasbearing sand, waterbearing sand, and shale by using the seismic attributes in a neural network technique within the petrel platform results.
Advanced seismic interpretation using petrel training. In this new release of petrel, users are able to model dual porosity dual permeability systems which are ready for simulation within petrel. Pitfalls and limitations in seismic attribute interpretation of. It enables companies to undertake geophysical mapbased approaches, covering seismic interpretation, well correlation, seismic well tie, seismic attribute computation, and structural framework construction. Petrelsoftware of schlumberger company is a worldwide soft. Ant track workflow is part of the software application that can be applied as it is or via designated workflows. Seismic attribute analysis also help to identify faults missed using the conventional methods of interpretation 17. Leonardo azevedo guerra raposo pereira atributos sismicos. Seismic attributes are routinely used to accelerate and quantify the.
Key words seismic attributes, 3d seismic, channel systems, deepwater, hydrocarbon reservoir characterization, petrel 2008. Throw away all the unnecessary attributes and what is left over is quite manageable. Create advanced seismic attributes to condition seismic data for better structural and stratigraphic interpretation tasks as well as enable powerful 3d volume. Practical seismic attributes with petrel in this course the students learn the theory and practical workflows needed for effectively using post stack seismic attributes in seismic interpretation. Petrel multitrace attributes is used to enhance the fault signature of the data by calculating variance or chaos or by filtering structural smoothing with the edge enhancement option. However, the most important implementation of seismic attributes is to acquire information from the raw seismic data which is not easily obvious anees, 20. A powerful integrated potential field modelling tool. There are many astonishing features that are identified in the current study, which could not otherwise be easily enhanced with the help of 2d seismic data. Application of multiattributes and spectral decomposition.
Certain operations are more efficient when seismic data are resident in. Seismic interpretation different methodologies in petrel i duration. Suco confirms new gas prospect based on seismic attributes. Petrel incorporates data conditioning tools and filters in the volume attribute domain. Application of seismic facies classification, spectral decomposition and seismic attributes to characterize deepwater depositional facies in oligocene sequence of kg basin, india.
The paradise attribute library includes a comprehensive list of instantaneous attributes as well as commercial algorithms and workflows developed by the attribute assisted seismic processing and interpretation aaspi group at the university of oklahoma, led by dr. In petrel interpretation software,structural smoothing is a tool applied to reduce background noise and to improve the spatial continuity of seismic signal. The course content covers the most common seismic attributes, discusses the theory, attribute management and visualization. Seismic attributes have been used for many years to delineate faults and stratigraphic features that are difficult to map using standard amplitude seismic data 18. This 5day advance seismic interpretation using petrel training course provides interpretation techniques developed for seismic data sets and applications on seismic attributes, seismic sequence stratigraphy, structural geology and avo. It includes a comprehensive package of seismic attributes used in. Identification of channel geometries applying seismic. This powerful combination enables companies to undertake geophysical mapbased approaches, covering seismic interpretation, well correlation, seismic well tie, seismic attribute computation, and structural framework construction. Depth slice of original seismic a, dip illumination attribute b and directional guided dip illumination attribute c.
After marfurt, techniques and best practices in multi attribute display seg, 2015 3 slide 3 introduction spectral decomposition in seismic consists of 2 steps 1. Pdf seismic attributes analysis for reservoir characterization. Using 3d seismic attributes in reservoir characterization. Amplitude derived attributes are useful in providing structural and stratigraphic details by providing physical parameters about the subsurface like acoustic impedance, and other properties. Seismic attributes and their applications in seismic.
Get latest version if you still have trouble, you should also clear your browser cache. Identified new prospective areasconfirmed by drillingfrom the neural network techniques assessment of the seismic attributes of. The volume attributes in petrel software includes three libraries. Various seismic volume attributes from the different libraries of petrel software have been. A flatspot utlity that enhances the signal of consistent flat events. Faculty of the department of earth and atmospheric sciences. The standard format for 2d and 3d seismic data is segy, a binary format that can easily be imported into petrel.
Application of seismic facies classification, spectral. The geometrical attributes have the capacity to enhance the visi. Seismic attributes in hydrocarbon reservoirs characterization. Full description from seismic to simulation procedures of shlumberger software. Though the seismically resolvable faults may be interpreted using. Application of seismic attributes for delineation of. Since then many new attributes were derived and computed. The purpose of this step is to define the shape of each of the faults that should be modeled. Most of these attributes are of commercial interest. Seismic attributes extraction and analyses have proven to offer new information and insights into structural and stratigraphic mapping interpretations.
Stewart abstract attribute analysis of 3d seismic data in time slices presents a great opportunity for. Arnab nag, divya prakash singh, anshika agarwal, shiv kumar malasi, anand s. Although the event on each survey is the same, variations in data gathering, processing, velocity modeling, etc. The use of seismic attributes to enhance structural interpretation of. Pdf using seismic attributes for reservoir characterization. Petrel by schlumberger is a commercial software designed especially for geological interpretation and modelling. Geometric attributes help define the structural and stratigraphic framework of the seismic interpretation, while physical attributes may be useful as direct hydrocarbon or lithologic indicators. When used collectively, emerson seismic attributes provide details of the structural, stratigraphic and fluid framework not readily visible in seismic. Seismic attributes were introduced as a part of the seismic interpretation in early 1970s. Adding seismic, 3d model horizons and properties in between the wells.
Seismic attributes and petrophsical properties of iba field, niger delta, nigeria itiowe k1, adiela u. Seismic attributes provide the seismic interpreter with new images that can enhance both the physical and geometric descriptions of the subsurface. Printing high resolution seismic files directly from petrel. Petrel is an excellent alternative for seismic interpretation. Pdf in this paper we have described some commonly utilized. Application of multi attributes and spectral decomposition with rgb blending for understanding the stratistructural features. Seismic attributes are the components of the seismic data which are obtained by measurement, computation, and other methods from the seismic data. Seismic attributes were introduced as a part of the seismic interpretation in early 1970s any information of interest that can be derived from seismic is seismic attributes 3.
Petrel has a volume attribute process for this called isofrequency component which is the isolation of the local contribution of individual frequencies to the makeup of the input signal. The anelastic attenuation factor or q is a seismic attribute that can be determined from seismic reflection data for both reservoir characterisation and advanced seismic processing. Petrel multitrace attributes schlumberger software. Ocean does not support internet explorer versions 8 and below. Maintain data consistency between petrel project data and external openspirit enabled data stores for selected data items using customizable match and merge rules. Directional guided seismic attributes and their use in. Fracture connectivity, transmissivity and permeability are computed and can be upscaled using odas method or flow based upscaling. The segy data are not copied into the petrel project, rather a link to the seismic data is created. Using 3d seismic attributes in reservoir characterization susan nissen geophysical consultant mclouth, ks kansas next step 2007 seminar. Pdf the efficiency of seismic attributes to differentiate between. The generalized spectral decomposition attribute helps the interpreter understand the contribution of individual frequencies to the makeup of the input seismic signal. In this paper we have described some commonly utilized seismic attributes that are of complementary value to the information acquire through traditional methods of seismic interpretation. Classification of seismic attributes the seismic attributes are classified basically into 2 categories.
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